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[media] zoran: remove bogus autodetect mode in set_norm
[deliverable/linux.git] / drivers / media / v4l2-core / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
15#include <linux/module.h>
5a0e3ad6 16#include <linux/slab.h>
35ea11ff
HV		 17#include <linux/types.h>
18#include <linux/kernel.h>
ae6db515 19#include <linux/version.h>
35ea11ff 20
35ea11ff
HV		 21#include <linux/videodev2.h>
22
35ea11ff
HV		 23#include <media/v4l2-common.h>
24#include <media/v4l2-ioctl.h>
11bbc1ca 25#include <media/v4l2-ctrls.h>
d3d7c963
SA		 26#include <media/v4l2-fh.h>
27#include <media/v4l2-event.h>
99cd47bc 28#include <media/v4l2-device.h>
80b36e0f 29#include <media/v4l2-chip-ident.h>
5a5adf6b 30#include <media/videobuf2-core.h>
35ea11ff 31
25985edc 32/* Zero out the end of the struct pointed to by p. Everything after, but
7ecc0cf9
TP		 33 * not including, the specified field is cleared. */
34#define CLEAR_AFTER_FIELD(p, field) \
35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
37
73f35418
HV		 38#define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
39
35ea11ff
HV		 40struct std_descr {
41 v4l2_std_id std;
42 const char *descr;
43};
44
45static const struct std_descr standards[] = {
46 { V4L2_STD_NTSC, "NTSC" },
47 { V4L2_STD_NTSC_M, "NTSC-M" },
48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
50 { V4L2_STD_NTSC_443, "NTSC-443" },
51 { V4L2_STD_PAL, "PAL" },
52 { V4L2_STD_PAL_BG, "PAL-BG" },
53 { V4L2_STD_PAL_B, "PAL-B" },
54 { V4L2_STD_PAL_B1, "PAL-B1" },
55 { V4L2_STD_PAL_G, "PAL-G" },
56 { V4L2_STD_PAL_H, "PAL-H" },
57 { V4L2_STD_PAL_I, "PAL-I" },
58 { V4L2_STD_PAL_DK, "PAL-DK" },
59 { V4L2_STD_PAL_D, "PAL-D" },
60 { V4L2_STD_PAL_D1, "PAL-D1" },
61 { V4L2_STD_PAL_K, "PAL-K" },
62 { V4L2_STD_PAL_M, "PAL-M" },
63 { V4L2_STD_PAL_N, "PAL-N" },
64 { V4L2_STD_PAL_Nc, "PAL-Nc" },
65 { V4L2_STD_PAL_60, "PAL-60" },
66 { V4L2_STD_SECAM, "SECAM" },
67 { V4L2_STD_SECAM_B, "SECAM-B" },
68 { V4L2_STD_SECAM_G, "SECAM-G" },
69 { V4L2_STD_SECAM_H, "SECAM-H" },
70 { V4L2_STD_SECAM_DK, "SECAM-DK" },
71 { V4L2_STD_SECAM_D, "SECAM-D" },
72 { V4L2_STD_SECAM_K, "SECAM-K" },
73 { V4L2_STD_SECAM_K1, "SECAM-K1" },
74 { V4L2_STD_SECAM_L, "SECAM-L" },
75 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
76 { 0, "Unknown" }
77};
78
79/* video4linux standard ID conversion to standard name
80 */
81const char *v4l2_norm_to_name(v4l2_std_id id)
82{
83 u32 myid = id;
84 int i;
85
86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
87 64 bit comparations. So, on that architecture, with some gcc
88 variants, compilation fails. Currently, the max value is 30bit wide.
89 */
90 BUG_ON(myid != id);
91
92 for (i = 0; standards[i].std; i++)
93 if (myid == standards[i].std)
94 break;
95 return standards[i].descr;
96}
97EXPORT_SYMBOL(v4l2_norm_to_name);
98
51f0b8d5
TP		 99/* Returns frame period for the given standard */
100void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
101{
102 if (id & V4L2_STD_525_60) {
103 frameperiod->numerator = 1001;
104 frameperiod->denominator = 30000;
105 } else {
106 frameperiod->numerator = 1;
107 frameperiod->denominator = 25;
108 }
109}
110EXPORT_SYMBOL(v4l2_video_std_frame_period);
111
35ea11ff
HV		 112/* Fill in the fields of a v4l2_standard structure according to the
113 'id' and 'transmission' parameters. Returns negative on error. */
114int v4l2_video_std_construct(struct v4l2_standard *vs,
115 int id, const char *name)
116{
51f0b8d5
TP		 117 vs->id = id;
118 v4l2_video_std_frame_period(id, &vs->frameperiod);
119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
35ea11ff
HV		 120 strlcpy(vs->name, name, sizeof(vs->name));
121 return 0;
122}
123EXPORT_SYMBOL(v4l2_video_std_construct);
124
125/* ----------------------------------------------------------------- */
126/* some arrays for pretty-printing debug messages of enum types */
127
128const char *v4l2_field_names[] = {
129 [V4L2_FIELD_ANY] = "any",
130 [V4L2_FIELD_NONE] = "none",
131 [V4L2_FIELD_TOP] = "top",
132 [V4L2_FIELD_BOTTOM] = "bottom",
133 [V4L2_FIELD_INTERLACED] = "interlaced",
134 [V4L2_FIELD_SEQ_TB] = "seq-tb",
135 [V4L2_FIELD_SEQ_BT] = "seq-bt",
136 [V4L2_FIELD_ALTERNATE] = "alternate",
137 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
138 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
139};
140EXPORT_SYMBOL(v4l2_field_names);
141
142const char *v4l2_type_names[] = {
143 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
144 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
145 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
146 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
147 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
148 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
149 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
150 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
f8f3914c
PO		 151 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
152 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
35ea11ff
HV		 153};
154EXPORT_SYMBOL(v4l2_type_names);
155
156static const char *v4l2_memory_names[] = {
157 [V4L2_MEMORY_MMAP] = "mmap",
158 [V4L2_MEMORY_USERPTR] = "userptr",
159 [V4L2_MEMORY_OVERLAY] = "overlay",
051c7788 160 [V4L2_MEMORY_DMABUF] = "dmabuf",
35ea11ff
HV		 161};
162
d9246240 163#define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
35ea11ff
HV		 164
165/* ------------------------------------------------------------------ */
166/* debug help functions */
8ab75e3e 167
59076122
HV		 168static void v4l_print_querycap(const void *arg, bool write_only)
169{
170 const struct v4l2_capability *p = arg;
171
27d5a87c 172 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, "
59076122 173 "capabilities=0x%08x, device_caps=0x%08x\n",
27d5a87c
HV		 174 (int)sizeof(p->driver), p->driver,
175 (int)sizeof(p->card), p->card,
176 (int)sizeof(p->bus_info), p->bus_info,
59076122
HV		 177 p->version, p->capabilities, p->device_caps);
178}
179
180static void v4l_print_enuminput(const void *arg, bool write_only)
181{
182 const struct v4l2_input *p = arg;
183
27d5a87c 184 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, "
59076122 185 "std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
27d5a87c
HV		 186 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
187 p->tuner, (unsigned long long)p->std, p->status,
188 p->capabilities);
59076122
HV		 189}
190
191static void v4l_print_enumoutput(const void *arg, bool write_only)
192{
193 const struct v4l2_output *p = arg;
194
27d5a87c 195 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, "
59076122 196 "modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
27d5a87c
HV		 197 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
198 p->modulator, (unsigned long long)p->std, p->capabilities);
59076122
HV		 199}
200
201static void v4l_print_audio(const void *arg, bool write_only)
202{
203 const struct v4l2_audio *p = arg;
204
205 if (write_only)
206 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
207 else
27d5a87c
HV		 208 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
209 p->index, (int)sizeof(p->name), p->name,
210 p->capability, p->mode);
59076122
HV		 211}
212
213static void v4l_print_audioout(const void *arg, bool write_only)
214{
215 const struct v4l2_audioout *p = arg;
216
217 if (write_only)
218 pr_cont("index=%u\n", p->index);
219 else
27d5a87c
HV		 220 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
221 p->index, (int)sizeof(p->name), p->name,
222 p->capability, p->mode);
59076122
HV		 223}
224
be6c64e4
HV		 225static void v4l_print_fmtdesc(const void *arg, bool write_only)
226{
227 const struct v4l2_fmtdesc *p = arg;
228
27d5a87c 229 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
be6c64e4
HV		 230 p->index, prt_names(p->type, v4l2_type_names),
231 p->flags, (p->pixelformat & 0xff),
232 (p->pixelformat >> 8) & 0xff,
233 (p->pixelformat >> 16) & 0xff,
234 (p->pixelformat >> 24) & 0xff,
27d5a87c 235 (int)sizeof(p->description), p->description);
be6c64e4
HV		 236}
237
238static void v4l_print_format(const void *arg, bool write_only)
239{
240 const struct v4l2_format *p = arg;
241 const struct v4l2_pix_format *pix;
242 const struct v4l2_pix_format_mplane *mp;
243 const struct v4l2_vbi_format *vbi;
244 const struct v4l2_sliced_vbi_format *sliced;
245 const struct v4l2_window *win;
246 const struct v4l2_clip *clip;
247 unsigned i;
248
249 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
250 switch (p->type) {
251 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
252 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
253 pix = &p->fmt.pix;
254 pr_cont(", width=%u, height=%u, "
255 "pixelformat=%c%c%c%c, field=%s, "
256 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
257 pix->width, pix->height,
258 (pix->pixelformat & 0xff),
259 (pix->pixelformat >> 8) & 0xff,
260 (pix->pixelformat >> 16) & 0xff,
261 (pix->pixelformat >> 24) & 0xff,
262 prt_names(pix->field, v4l2_field_names),
263 pix->bytesperline, pix->sizeimage,
264 pix->colorspace);
265 break;
266 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
267 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
268 mp = &p->fmt.pix_mp;
269 pr_cont(", width=%u, height=%u, "
270 "format=%c%c%c%c, field=%s, "
271 "colorspace=%d, num_planes=%u\n",
272 mp->width, mp->height,
273 (mp->pixelformat & 0xff),
274 (mp->pixelformat >> 8) & 0xff,
275 (mp->pixelformat >> 16) & 0xff,
276 (mp->pixelformat >> 24) & 0xff,
277 prt_names(mp->field, v4l2_field_names),
278 mp->colorspace, mp->num_planes);
279 for (i = 0; i < mp->num_planes; i++)
280 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
281 mp->plane_fmt[i].bytesperline,
282 mp->plane_fmt[i].sizeimage);
283 break;
284 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
285 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
286 win = &p->fmt.win;
287 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, "
288 "chromakey=0x%08x, bitmap=%p, "
289 "global_alpha=0x%02x\n",
290 win->w.width, win->w.height,
291 win->w.left, win->w.top,
292 prt_names(win->field, v4l2_field_names),
293 win->chromakey, win->bitmap, win->global_alpha);
294 clip = win->clips;
295 for (i = 0; i < win->clipcount; i++) {
296 printk(KERN_DEBUG "clip %u: wxh=%dx%d, x,y=%d,%d\n",
297 i, clip->c.width, clip->c.height,
298 clip->c.left, clip->c.top);
299 clip = clip->next;
300 }
301 break;
302 case V4L2_BUF_TYPE_VBI_CAPTURE:
303 case V4L2_BUF_TYPE_VBI_OUTPUT:
304 vbi = &p->fmt.vbi;
305 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, "
306 "sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
307 vbi->sampling_rate, vbi->offset,
308 vbi->samples_per_line,
309 (vbi->sample_format & 0xff),
310 (vbi->sample_format >> 8) & 0xff,
311 (vbi->sample_format >> 16) & 0xff,
312 (vbi->sample_format >> 24) & 0xff,
313 vbi->start[0], vbi->start[1],
314 vbi->count[0], vbi->count[1]);
315 break;
316 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
317 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
318 sliced = &p->fmt.sliced;
319 pr_cont(", service_set=0x%08x, io_size=%d\n",
320 sliced->service_set, sliced->io_size);
321 for (i = 0; i < 24; i++)
322 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
323 sliced->service_lines[0][i],
324 sliced->service_lines[1][i]);
325 break;
be6c64e4
HV		 326 }
327}
328
329static void v4l_print_framebuffer(const void *arg, bool write_only)
330{
331 const struct v4l2_framebuffer *p = arg;
332
333 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, "
334 "height=%u, pixelformat=%c%c%c%c, "
335 "bytesperline=%u sizeimage=%u, colorspace=%d\n",
336 p->capability, p->flags, p->base,
337 p->fmt.width, p->fmt.height,
338 (p->fmt.pixelformat & 0xff),
339 (p->fmt.pixelformat >> 8) & 0xff,
340 (p->fmt.pixelformat >> 16) & 0xff,
341 (p->fmt.pixelformat >> 24) & 0xff,
342 p->fmt.bytesperline, p->fmt.sizeimage,
343 p->fmt.colorspace);
344}
345
e325b244
HV		 346static void v4l_print_buftype(const void *arg, bool write_only)
347{
348 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
349}
350
4b1e2e4d
HV		 351static void v4l_print_modulator(const void *arg, bool write_only)
352{
353 const struct v4l2_modulator *p = arg;
354
355 if (write_only)
356 pr_cont("index=%u, txsubchans=0x%x", p->index, p->txsubchans);
357 else
27d5a87c 358 pr_cont("index=%u, name=%.*s, capability=0x%x, "
4b1e2e4d 359 "rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
27d5a87c 360 p->index, (int)sizeof(p->name), p->name, p->capability,
4b1e2e4d
HV		 361 p->rangelow, p->rangehigh, p->txsubchans);
362}
363
364static void v4l_print_tuner(const void *arg, bool write_only)
365{
366 const struct v4l2_tuner *p = arg;
367
368 if (write_only)
369 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
370 else
27d5a87c 371 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, "
4b1e2e4d
HV		 372 "rangelow=%u, rangehigh=%u, signal=%u, afc=%d, "
373 "rxsubchans=0x%x, audmode=%u\n",
27d5a87c 374 p->index, (int)sizeof(p->name), p->name, p->type,
4b1e2e4d
HV		 375 p->capability, p->rangelow,
376 p->rangehigh, p->signal, p->afc,
377 p->rxsubchans, p->audmode);
378}
379
380static void v4l_print_frequency(const void *arg, bool write_only)
381{
382 const struct v4l2_frequency *p = arg;
383
384 pr_cont("tuner=%u, type=%u, frequency=%u\n",
385 p->tuner, p->type, p->frequency);
386}
387
388static void v4l_print_standard(const void *arg, bool write_only)
389{
390 const struct v4l2_standard *p = arg;
391
27d5a87c 392 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, "
4b1e2e4d 393 "framelines=%u\n", p->index,
27d5a87c 394 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
4b1e2e4d
HV		 395 p->frameperiod.numerator,
396 p->frameperiod.denominator,
397 p->framelines);
398}
399
400static void v4l_print_std(const void *arg, bool write_only)
401{
402 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
403}
404
405static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
406{
407 const struct v4l2_hw_freq_seek *p = arg;
408
5e788317
HV		 409 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, "
410 "rangelow=%u, rangehigh=%u\n",
411 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
412 p->rangelow, p->rangehigh);
4b1e2e4d
HV		 413}
414
eb3728ed 415static void v4l_print_requestbuffers(const void *arg, bool write_only)
59076122 416{
eb3728ed
HV		 417 const struct v4l2_requestbuffers *p = arg;
418
419 pr_cont("count=%d, type=%s, memory=%s\n",
420 p->count,
421 prt_names(p->type, v4l2_type_names),
422 prt_names(p->memory, v4l2_memory_names));
59076122
HV		 423}
424
eb3728ed 425static void v4l_print_buffer(const void *arg, bool write_only)
35ea11ff 426{
eb3728ed
HV		 427 const struct v4l2_buffer *p = arg;
428 const struct v4l2_timecode *tc = &p->timecode;
429 const struct v4l2_plane *plane;
d14e6d76 430 int i;
35ea11ff 431
eb3728ed
HV		 432 pr_cont("%02ld:%02d:%02d.%08ld index=%d, type=%s, "
433 "flags=0x%08x, field=%s, sequence=%d, memory=%s",
35ea11ff
HV		 434 p->timestamp.tv_sec / 3600,
435 (int)(p->timestamp.tv_sec / 60) % 60,
436 (int)(p->timestamp.tv_sec % 60),
b045979d 437 (long)p->timestamp.tv_usec,
35ea11ff
HV		 438 p->index,
439 prt_names(p->type, v4l2_type_names),
eb3728ed
HV		 440 p->flags, prt_names(p->field, v4l2_field_names),
441 p->sequence, prt_names(p->memory, v4l2_memory_names));
d14e6d76
PO		 442
443 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
eb3728ed 444 pr_cont("\n");
d14e6d76
PO		 445 for (i = 0; i < p->length; ++i) {
446 plane = &p->m.planes[i];
eb3728ed
HV		 447 printk(KERN_DEBUG
448 "plane %d: bytesused=%d, data_offset=0x%08x "
449 "offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 450 i, plane->bytesused, plane->data_offset,
451 plane->m.userptr, plane->length);
452 }
453 } else {
eb3728ed 454 pr_cont("bytesused=%d, offset/userptr=0x%lx, length=%d\n",
d14e6d76
PO		 455 p->bytesused, p->m.userptr, p->length);
456 }
457
eb3728ed
HV		 458 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, "
459 "flags=0x%08x, frames=%d, userbits=0x%08x\n",
35ea11ff
HV		 460 tc->hours, tc->minutes, tc->seconds,
461 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
462}
463
b799d09a
TS		 464static void v4l_print_exportbuffer(const void *arg, bool write_only)
465{
466 const struct v4l2_exportbuffer *p = arg;
467
468 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
469 p->fd, prt_names(p->type, v4l2_type_names),
470 p->index, p->plane, p->flags);
471}
472
eb3728ed
HV		 473static void v4l_print_create_buffers(const void *arg, bool write_only)
474{
475 const struct v4l2_create_buffers *p = arg;
476
477 pr_cont("index=%d, count=%d, memory=%s, ",
478 p->index, p->count,
479 prt_names(p->memory, v4l2_memory_names));
480 v4l_print_format(&p->format, write_only);
481}
482
483static void v4l_print_streamparm(const void *arg, bool write_only)
484{
485 const struct v4l2_streamparm *p = arg;
486
487 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
488
489 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
490 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
491 const struct v4l2_captureparm *c = &p->parm.capture;
492
493 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, "
494 "extendedmode=%d, readbuffers=%d\n",
495 c->capability, c->capturemode,
496 c->timeperframe.numerator, c->timeperframe.denominator,
497 c->extendedmode, c->readbuffers);
498 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
499 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
500 const struct v4l2_outputparm *c = &p->parm.output;
501
502 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, "
503 "extendedmode=%d, writebuffers=%d\n",
504 c->capability, c->outputmode,
505 c->timeperframe.numerator, c->timeperframe.denominator,
506 c->extendedmode, c->writebuffers);
507 }
508}
509
efbceecd
HV		 510static void v4l_print_queryctrl(const void *arg, bool write_only)
511{
512 const struct v4l2_queryctrl *p = arg;
513
27d5a87c 514 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, "
efbceecd 515 "step=%d, default=%d, flags=0x%08x\n",
27d5a87c 516 p->id, p->type, (int)sizeof(p->name), p->name,
efbceecd
HV		 517 p->minimum, p->maximum,
518 p->step, p->default_value, p->flags);
519}
520
521static void v4l_print_querymenu(const void *arg, bool write_only)
522{
523 const struct v4l2_querymenu *p = arg;
524
525 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
526}
527
528static void v4l_print_control(const void *arg, bool write_only)
529{
530 const struct v4l2_control *p = arg;
531
532 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
533}
534
535static void v4l_print_ext_controls(const void *arg, bool write_only)
536{
537 const struct v4l2_ext_controls *p = arg;
538 int i;
539
540 pr_cont("class=0x%x, count=%d, error_idx=%d",
541 p->ctrl_class, p->count, p->error_idx);
542 for (i = 0; i < p->count; i++) {
543 if (p->controls[i].size)
544 pr_cont(", id/val=0x%x/0x%x",
545 p->controls[i].id, p->controls[i].value);
546 else
547 pr_cont(", id/size=0x%x/%u",
548 p->controls[i].id, p->controls[i].size);
549 }
550 pr_cont("\n");
551}
552
d84f2d94 553static void v4l_print_cropcap(const void *arg, bool write_only)
eb3728ed 554{
d84f2d94
HV		 555 const struct v4l2_cropcap *p = arg;
556
557 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, "
558 "defrect wxh=%dx%d, x,y=%d,%d\n, "
559 "pixelaspect %d/%d\n",
560 prt_names(p->type, v4l2_type_names),
561 p->bounds.width, p->bounds.height,
562 p->bounds.left, p->bounds.top,
563 p->defrect.width, p->defrect.height,
564 p->defrect.left, p->defrect.top,
565 p->pixelaspect.numerator, p->pixelaspect.denominator);
eb3728ed
HV		 566}
567
d84f2d94 568static void v4l_print_crop(const void *arg, bool write_only)
35ea11ff 569{
d84f2d94
HV		 570 const struct v4l2_crop *p = arg;
571
572 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
573 prt_names(p->type, v4l2_type_names),
574 p->c.width, p->c.height,
575 p->c.left, p->c.top);
576}
577
578static void v4l_print_selection(const void *arg, bool write_only)
579{
580 const struct v4l2_selection *p = arg;
581
582 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
583 prt_names(p->type, v4l2_type_names),
584 p->target, p->flags,
585 p->r.width, p->r.height, p->r.left, p->r.top);
586}
587
d806f2df
HV		 588static void v4l_print_jpegcompression(const void *arg, bool write_only)
589{
590 const struct v4l2_jpegcompression *p = arg;
591
592 pr_cont("quality=%d, APPn=%d, APP_len=%d, "
593 "COM_len=%d, jpeg_markers=0x%x\n",
594 p->quality, p->APPn, p->APP_len,
595 p->COM_len, p->jpeg_markers);
596}
597
598static void v4l_print_enc_idx(const void *arg, bool write_only)
599{
600 const struct v4l2_enc_idx *p = arg;
601
602 pr_cont("entries=%d, entries_cap=%d\n",
603 p->entries, p->entries_cap);
604}
605
606static void v4l_print_encoder_cmd(const void *arg, bool write_only)
607{
608 const struct v4l2_encoder_cmd *p = arg;
609
610 pr_cont("cmd=%d, flags=0x%x\n",
611 p->cmd, p->flags);
612}
613
614static void v4l_print_decoder_cmd(const void *arg, bool write_only)
615{
616 const struct v4l2_decoder_cmd *p = arg;
617
618 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
619
620 if (p->cmd == V4L2_DEC_CMD_START)
621 pr_info("speed=%d, format=%u\n",
622 p->start.speed, p->start.format);
623 else if (p->cmd == V4L2_DEC_CMD_STOP)
624 pr_info("pts=%llu\n", p->stop.pts);
625}
626
f16f77b0
HV		 627static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
628{
629 const struct v4l2_dbg_chip_ident *p = arg;
630
631 pr_cont("type=%u, ", p->match.type);
3eef2510 632 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 633 pr_cont("name=%.*s, ",
634 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 635 else
636 pr_cont("addr=%u, ", p->match.addr);
637 pr_cont("chip_ident=%u, revision=0x%x\n",
638 p->ident, p->revision);
639}
640
96b03d2a 641static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
79b0c640 642{
96b03d2a 643 const struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 644
645 pr_cont("type=%u, ", p->match.type);
3eef2510 646 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
79b0c640
HV		 647 pr_cont("name=%.*s, ",
648 (int)sizeof(p->match.name), p->match.name);
649 else
650 pr_cont("addr=%u, ", p->match.addr);
651 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
652}
653
f16f77b0
HV		 654static void v4l_print_dbg_register(const void *arg, bool write_only)
655{
656 const struct v4l2_dbg_register *p = arg;
657
658 pr_cont("type=%u, ", p->match.type);
3eef2510 659 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
27d5a87c
HV		 660 pr_cont("name=%.*s, ",
661 (int)sizeof(p->match.name), p->match.name);
f16f77b0
HV		 662 else
663 pr_cont("addr=%u, ", p->match.addr);
664 pr_cont("reg=0x%llx, val=0x%llx\n",
665 p->reg, p->val);
666}
667
efc626b0 668static void v4l_print_dv_timings(const void *arg, bool write_only)
5d7758ee 669{
efc626b0
HV		 670 const struct v4l2_dv_timings *p = arg;
671
5d7758ee
HV		 672 switch (p->type) {
673 case V4L2_DV_BT_656_1120:
efc626b0
HV		 674 pr_cont("type=bt-656/1120, interlaced=%u, "
675 "pixelclock=%llu, "
676 "width=%u, height=%u, polarities=0x%x, "
677 "hfrontporch=%u, hsync=%u, "
678 "hbackporch=%u, vfrontporch=%u, "
679 "vsync=%u, vbackporch=%u, "
680 "il_vfrontporch=%u, il_vsync=%u, "
681 "il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
5d7758ee
HV		 682 p->bt.interlaced, p->bt.pixelclock,
683 p->bt.width, p->bt.height,
684 p->bt.polarities, p->bt.hfrontporch,
685 p->bt.hsync, p->bt.hbackporch,
686 p->bt.vfrontporch, p->bt.vsync,
687 p->bt.vbackporch, p->bt.il_vfrontporch,
688 p->bt.il_vsync, p->bt.il_vbackporch,
689 p->bt.standards, p->bt.flags);
690 break;
691 default:
efc626b0 692 pr_cont("type=%d\n", p->type);
5d7758ee
HV		 693 break;
694 }
695}
696
efc626b0
HV		 697static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
698{
699 const struct v4l2_enum_dv_timings *p = arg;
700
701 pr_cont("index=%u, ", p->index);
702 v4l_print_dv_timings(&p->timings, write_only);
703}
704
705static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
706{
707 const struct v4l2_dv_timings_cap *p = arg;
708
709 switch (p->type) {
710 case V4L2_DV_BT_656_1120:
711 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, "
712 "pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
713 p->bt.min_width, p->bt.max_width,
714 p->bt.min_height, p->bt.max_height,
715 p->bt.min_pixelclock, p->bt.max_pixelclock,
716 p->bt.standards, p->bt.capabilities);
717 break;
718 default:
719 pr_cont("type=%u\n", p->type);
720 break;
721 }
722}
723
458aa4a6
HV		 724static void v4l_print_frmsizeenum(const void *arg, bool write_only)
725{
726 const struct v4l2_frmsizeenum *p = arg;
727
728 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
729 p->index,
730 (p->pixel_format & 0xff),
731 (p->pixel_format >> 8) & 0xff,
732 (p->pixel_format >> 16) & 0xff,
733 (p->pixel_format >> 24) & 0xff,
734 p->type);
735 switch (p->type) {
736 case V4L2_FRMSIZE_TYPE_DISCRETE:
737 pr_cont(" wxh=%ux%u\n",
738 p->discrete.width, p->discrete.height);
739 break;
740 case V4L2_FRMSIZE_TYPE_STEPWISE:
741 pr_cont(" min=%ux%u, max=%ux%u, step=%ux%u\n",
742 p->stepwise.min_width, p->stepwise.min_height,
743 p->stepwise.step_width, p->stepwise.step_height,
744 p->stepwise.max_width, p->stepwise.max_height);
745 break;
746 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
747 /* fall through */
748 default:
749 pr_cont("\n");
750 break;
751 }
752}
753
754static void v4l_print_frmivalenum(const void *arg, bool write_only)
755{
756 const struct v4l2_frmivalenum *p = arg;
757
758 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
759 p->index,
760 (p->pixel_format & 0xff),
761 (p->pixel_format >> 8) & 0xff,
762 (p->pixel_format >> 16) & 0xff,
763 (p->pixel_format >> 24) & 0xff,
764 p->width, p->height, p->type);
765 switch (p->type) {
766 case V4L2_FRMIVAL_TYPE_DISCRETE:
767 pr_cont(" fps=%d/%d\n",
768 p->discrete.numerator,
769 p->discrete.denominator);
770 break;
771 case V4L2_FRMIVAL_TYPE_STEPWISE:
772 pr_cont(" min=%d/%d, max=%d/%d, step=%d/%d\n",
773 p->stepwise.min.numerator,
774 p->stepwise.min.denominator,
775 p->stepwise.max.numerator,
776 p->stepwise.max.denominator,
777 p->stepwise.step.numerator,
778 p->stepwise.step.denominator);
779 break;
780 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
781 /* fall through */
782 default:
783 pr_cont("\n");
784 break;
785 }
786}
787
788static void v4l_print_event(const void *arg, bool write_only)
789{
790 const struct v4l2_event *p = arg;
791 const struct v4l2_event_ctrl *c;
792
793 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, "
794 "timestamp=%lu.%9.9lu\n",
795 p->type, p->pending, p->sequence, p->id,
796 p->timestamp.tv_sec, p->timestamp.tv_nsec);
797 switch (p->type) {
798 case V4L2_EVENT_VSYNC:
799 printk(KERN_DEBUG "field=%s\n",
800 prt_names(p->u.vsync.field, v4l2_field_names));
801 break;
802 case V4L2_EVENT_CTRL:
803 c = &p->u.ctrl;
804 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
805 c->changes, c->type);
806 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
807 pr_cont("value64=%lld, ", c->value64);
808 else
809 pr_cont("value=%d, ", c->value);
810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d,"
811 " default_value=%d\n",
812 c->flags, c->minimum, c->maximum,
813 c->step, c->default_value);
814 break;
815 case V4L2_EVENT_FRAME_SYNC:
816 pr_cont("frame_sequence=%u\n",
817 p->u.frame_sync.frame_sequence);
818 break;
819 }
820}
821
822static void v4l_print_event_subscription(const void *arg, bool write_only)
823{
824 const struct v4l2_event_subscription *p = arg;
825
826 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
827 p->type, p->id, p->flags);
828}
829
830static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
831{
832 const struct v4l2_sliced_vbi_cap *p = arg;
833 int i;
834
835 pr_cont("type=%s, service_set=0x%08x\n",
836 prt_names(p->type, v4l2_type_names), p->service_set);
837 for (i = 0; i < 24; i++)
838 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
839 p->service_lines[0][i],
840 p->service_lines[1][i]);
841}
842
82b655bf
HV		 843static void v4l_print_freq_band(const void *arg, bool write_only)
844{
845 const struct v4l2_frequency_band *p = arg;
846
847 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, "
848 "rangelow=%u, rangehigh=%u, modulation=0x%x\n",
849 p->tuner, p->type, p->index,
850 p->capability, p->rangelow,
851 p->rangehigh, p->modulation);
852}
853
efc626b0
HV		 854static void v4l_print_u32(const void *arg, bool write_only)
855{
856 pr_cont("value=%u\n", *(const u32 *)arg);
857}
858
859static void v4l_print_newline(const void *arg, bool write_only)
860{
861 pr_cont("\n");
862}
863
f18d8e07
HV		 864static void v4l_print_default(const void *arg, bool write_only)
865{
866 pr_cont("driver-specific ioctl\n");
867}
868
efbceecd 869static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
35ea11ff
HV		 870{
871 __u32 i;
872
873 /* zero the reserved fields */
874 c->reserved[0] = c->reserved[1] = 0;
6b5a9492 875 for (i = 0; i < c->count; i++)
35ea11ff 876 c->controls[i].reserved2[0] = 0;
6b5a9492 877
35ea11ff
HV		 878 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
879 when using extended controls.
880 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
881 is it allowed for backwards compatibility.
882 */
883 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
884 return 0;
885 /* Check that all controls are from the same control class. */
886 for (i = 0; i < c->count; i++) {
887 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
888 c->error_idx = i;
889 return 0;
890 }
891 }
892 return 1;
893}
894
4b20259f 895static int check_fmt(struct file *file, enum v4l2_buf_type type)
35ea11ff 896{
4b20259f
HV		 897 struct video_device *vfd = video_devdata(file);
898 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
899 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
900 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
901 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
902 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
903
a399810c
HV		 904 if (ops == NULL)
905 return -EINVAL;
906
35ea11ff
HV		 907 switch (type) {
908 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f
HV		 909 if (is_vid && is_rx &&
910 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
d14e6d76
PO		 911 return 0;
912 break;
913 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 914 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
35ea11ff
HV		 915 return 0;
916 break;
917 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 918 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
35ea11ff
HV		 919 return 0;
920 break;
921 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f
HV		 922 if (is_vid && is_tx &&
923 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
d14e6d76
PO		 924 return 0;
925 break;
926 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 927 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
35ea11ff
HV		 928 return 0;
929 break;
930 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 931 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
35ea11ff
HV		 932 return 0;
933 break;
934 case V4L2_BUF_TYPE_VBI_CAPTURE:
4b20259f 935 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
35ea11ff
HV		 936 return 0;
937 break;
938 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 939 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
35ea11ff
HV		 940 return 0;
941 break;
942 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
4b20259f 943 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
35ea11ff
HV		 944 return 0;
945 break;
946 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 947 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
35ea11ff
HV		 948 return 0;
949 break;
633c98e5 950 default:
35ea11ff
HV		 951 break;
952 }
953 return -EINVAL;
954}
955
59076122
HV		 956static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
957 struct file *file, void *fh, void *arg)
958{
959 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
960
961 cap->version = LINUX_VERSION_CODE;
962 return ops->vidioc_querycap(file, fh, cap);
963}
964
965static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
966 struct file *file, void *fh, void *arg)
967{
968 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
969}
970
971static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
972 struct file *file, void *fh, void *arg)
973{
974 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
975}
976
d0547cba
HV		 977static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
978 struct file *file, void *fh, void *arg)
979{
980 struct video_device *vfd;
981 u32 *p = arg;
982
983 if (ops->vidioc_g_priority)
984 return ops->vidioc_g_priority(file, fh, arg);
985 vfd = video_devdata(file);
986 *p = v4l2_prio_max(&vfd->v4l2_dev->prio);
987 return 0;
988}
989
990static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
991 struct file *file, void *fh, void *arg)
992{
993 struct video_device *vfd;
994 struct v4l2_fh *vfh;
995 u32 *p = arg;
996
997 if (ops->vidioc_s_priority)
998 return ops->vidioc_s_priority(file, fh, *p);
999 vfd = video_devdata(file);
1000 vfh = file->private_data;
1001 return v4l2_prio_change(&vfd->v4l2_dev->prio, &vfh->prio, *p);
1002}
1003
59076122
HV		 1004static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1005 struct file *file, void *fh, void *arg)
1006{
73f35418 1007 struct video_device *vfd = video_devdata(file);
59076122
HV		 1008 struct v4l2_input *p = arg;
1009
1010 /*
02fa6282 1011 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1012 * CAP_STD here based on ioctl handler provided by the
1013 * driver. If the driver doesn't support these
1014 * for a specific input, it must override these flags.
1015 */
73f35418 1016 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1017 p->capabilities |= V4L2_IN_CAP_STD;
59076122
HV		 1018
1019 return ops->vidioc_enum_input(file, fh, p);
1020}
1021
1022static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1023 struct file *file, void *fh, void *arg)
1024{
73f35418 1025 struct video_device *vfd = video_devdata(file);
59076122
HV		 1026 struct v4l2_output *p = arg;
1027
1028 /*
02fa6282 1029 * We set the flags for CAP_DV_TIMINGS &
59076122
HV		 1030 * CAP_STD here based on ioctl handler provided by the
1031 * driver. If the driver doesn't support these
1032 * for a specific output, it must override these flags.
1033 */
73f35418 1034 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
59076122 1035 p->capabilities |= V4L2_OUT_CAP_STD;
59076122
HV		 1036
1037 return ops->vidioc_enum_output(file, fh, p);
1038}
1039
be6c64e4
HV		 1040static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1041 struct file *file, void *fh, void *arg)
1042{
1043 struct v4l2_fmtdesc *p = arg;
4b20259f
HV		 1044 struct video_device *vfd = video_devdata(file);
1045 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1046 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1047
1048 switch (p->type) {
1049 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1050 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap))
be6c64e4
HV		 1051 break;
1052 return ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1053 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1054 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_cap_mplane))
be6c64e4
HV		 1055 break;
1056 return ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
1057 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1058 if (unlikely(!is_rx || !ops->vidioc_enum_fmt_vid_overlay))
be6c64e4
HV		 1059 break;
1060 return ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1061 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1062 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out))
be6c64e4
HV		 1063 break;
1064 return ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1065 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1066 if (unlikely(!is_tx || !ops->vidioc_enum_fmt_vid_out_mplane))
be6c64e4
HV		 1067 break;
1068 return ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
be6c64e4
HV		 1069 }
1070 return -EINVAL;
1071}
1072
1073static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1074 struct file *file, void *fh, void *arg)
1075{
1076 struct v4l2_format *p = arg;
4b20259f
HV		 1077 struct video_device *vfd = video_devdata(file);
1078 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1079 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1080 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1081
1082 switch (p->type) {
1083 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1084 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
be6c64e4
HV		 1085 break;
1086 return ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1087 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1088 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
be6c64e4
HV		 1089 break;
1090 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1091 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1092 if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
be6c64e4
HV		 1093 break;
1094 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1095 case V4L2_BUF_TYPE_VBI_CAPTURE:
1096 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
1097 break;
1098 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1099 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1100 if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
1101 break;
1102 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1103 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1104 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
be6c64e4
HV		 1105 break;
1106 return ops->vidioc_g_fmt_vid_out(file, fh, arg);
1107 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1108 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
be6c64e4
HV		 1109 break;
1110 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1111 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1112 if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
be6c64e4
HV		 1113 break;
1114 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1115 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1116 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
be6c64e4
HV		 1117 break;
1118 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
be6c64e4 1119 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1120 if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
be6c64e4
HV		 1121 break;
1122 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1123 }
1124 return -EINVAL;
1125}
1126
1127static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1128 struct file *file, void *fh, void *arg)
1129{
1130 struct v4l2_format *p = arg;
4b20259f
HV		 1131 struct video_device *vfd = video_devdata(file);
1132 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1133 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1134 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1135
1136 switch (p->type) {
1137 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1138 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
be6c64e4
HV		 1139 break;
1140 CLEAR_AFTER_FIELD(p, fmt.pix);
1141 return ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1142 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1143 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
be6c64e4
HV		 1144 break;
1145 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1146 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1147 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1148 if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
be6c64e4
HV		 1149 break;
1150 CLEAR_AFTER_FIELD(p, fmt.win);
1151 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1152 case V4L2_BUF_TYPE_VBI_CAPTURE:
1153 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
1154 break;
1155 CLEAR_AFTER_FIELD(p, fmt.vbi);
1156 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1157 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1158 if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
1159 break;
1160 CLEAR_AFTER_FIELD(p, fmt.sliced);
1161 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1162 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1163 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
be6c64e4
HV		 1164 break;
1165 CLEAR_AFTER_FIELD(p, fmt.pix);
1166 return ops->vidioc_s_fmt_vid_out(file, fh, arg);
1167 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1168 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
be6c64e4
HV		 1169 break;
1170 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1171 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1172 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1173 if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
be6c64e4
HV		 1174 break;
1175 CLEAR_AFTER_FIELD(p, fmt.win);
1176 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1177 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1178 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
be6c64e4
HV		 1179 break;
1180 CLEAR_AFTER_FIELD(p, fmt.vbi);
1181 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
be6c64e4 1182 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1183 if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
be6c64e4
HV		 1184 break;
1185 CLEAR_AFTER_FIELD(p, fmt.sliced);
1186 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1187 }
1188 return -EINVAL;
1189}
1190
1191static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1192 struct file *file, void *fh, void *arg)
1193{
1194 struct v4l2_format *p = arg;
4b20259f
HV		 1195 struct video_device *vfd = video_devdata(file);
1196 bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
1197 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
1198 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
be6c64e4
HV		 1199
1200 switch (p->type) {
1201 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4b20259f 1202 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
be6c64e4
HV		 1203 break;
1204 CLEAR_AFTER_FIELD(p, fmt.pix);
1205 return ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1206 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
4b20259f 1207 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
be6c64e4
HV		 1208 break;
1209 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1210 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1211 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4b20259f 1212 if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
be6c64e4
HV		 1213 break;
1214 CLEAR_AFTER_FIELD(p, fmt.win);
1215 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
4b20259f
HV		 1216 case V4L2_BUF_TYPE_VBI_CAPTURE:
1217 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
1218 break;
1219 CLEAR_AFTER_FIELD(p, fmt.vbi);
1220 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1221 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1222 if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
1223 break;
1224 CLEAR_AFTER_FIELD(p, fmt.sliced);
1225 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
be6c64e4 1226 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
4b20259f 1227 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
be6c64e4
HV		 1228 break;
1229 CLEAR_AFTER_FIELD(p, fmt.pix);
1230 return ops->vidioc_try_fmt_vid_out(file, fh, arg);
1231 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
4b20259f 1232 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
be6c64e4
HV		 1233 break;
1234 CLEAR_AFTER_FIELD(p, fmt.pix_mp);
1235 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1236 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
4b20259f 1237 if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
be6c64e4
HV		 1238 break;
1239 CLEAR_AFTER_FIELD(p, fmt.win);
1240 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
be6c64e4 1241 case V4L2_BUF_TYPE_VBI_OUTPUT:
4b20259f 1242 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
be6c64e4
HV		 1243 break;
1244 CLEAR_AFTER_FIELD(p, fmt.vbi);
1245 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
be6c64e4 1246 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
4b20259f 1247 if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
be6c64e4
HV		 1248 break;
1249 CLEAR_AFTER_FIELD(p, fmt.sliced);
1250 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
be6c64e4
HV		 1251 }
1252 return -EINVAL;
1253}
1254
e325b244
HV		 1255static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1256 struct file *file, void *fh, void *arg)
1257{
1258 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1259}
1260
1261static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1262 struct file *file, void *fh, void *arg)
1263{
1264 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1265}
1266
4b1e2e4d
HV		 1267static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1268 struct file *file, void *fh, void *arg)
1269{
1270 struct video_device *vfd = video_devdata(file);
1271 struct v4l2_tuner *p = arg;
82b655bf 1272 int err;
4b1e2e4d
HV		 1273
1274 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1275 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
82b655bf
HV		 1276 err = ops->vidioc_g_tuner(file, fh, p);
1277 if (!err)
1278 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1279 return err;
4b1e2e4d
HV		 1280}
1281
1282static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1283 struct file *file, void *fh, void *arg)
1284{
1285 struct video_device *vfd = video_devdata(file);
1286 struct v4l2_tuner *p = arg;
1287
1288 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1289 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1290 return ops->vidioc_s_tuner(file, fh, p);
1291}
1292
82b655bf
HV		 1293static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1294 struct file *file, void *fh, void *arg)
1295{
1296 struct v4l2_modulator *p = arg;
1297 int err;
1298
1299 err = ops->vidioc_g_modulator(file, fh, p);
1300 if (!err)
1301 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1302 return err;
1303}
1304
4b1e2e4d
HV		 1305static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1306 struct file *file, void *fh, void *arg)
1307{
1308 struct video_device *vfd = video_devdata(file);
1309 struct v4l2_frequency *p = arg;
1310
1311 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1312 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1313 return ops->vidioc_g_frequency(file, fh, p);
1314}
1315
1316static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1317 struct file *file, void *fh, void *arg)
1318{
1319 struct video_device *vfd = video_devdata(file);
b530a447 1320 const struct v4l2_frequency *p = arg;
4b1e2e4d
HV		 1321 enum v4l2_tuner_type type;
1322
1323 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1324 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1325 if (p->type != type)
1326 return -EINVAL;
1327 return ops->vidioc_s_frequency(file, fh, p);
1328}
1329
1330static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1331 struct file *file, void *fh, void *arg)
1332{
1333 struct video_device *vfd = video_devdata(file);
1334 struct v4l2_standard *p = arg;
1335 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1336 unsigned int index = p->index, i, j = 0;
1337 const char *descr = "";
1338
a5338190
HV		 1339 /* Return -ENODATA if the tvnorms for the current input
1340 or output is 0, meaning that it doesn't support this API. */
1341 if (id == 0)
1342 return -ENODATA;
1343
4b1e2e4d
HV		 1344 /* Return norm array in a canonical way */
1345 for (i = 0; i <= index && id; i++) {
1346 /* last std value in the standards array is 0, so this
1347 while always ends there since (id & 0) == 0. */
1348 while ((id & standards[j].std) != standards[j].std)
1349 j++;
1350 curr_id = standards[j].std;
1351 descr = standards[j].descr;
1352 j++;
1353 if (curr_id == 0)
1354 break;
1355 if (curr_id != V4L2_STD_PAL &&
1356 curr_id != V4L2_STD_SECAM &&
1357 curr_id != V4L2_STD_NTSC)
1358 id &= ~curr_id;
1359 }
1360 if (i <= index)
1361 return -EINVAL;
1362
1363 v4l2_video_std_construct(p, curr_id, descr);
1364 return 0;
1365}
1366
4b1e2e4d
HV		 1367static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1368 struct file *file, void *fh, void *arg)
1369{
1370 struct video_device *vfd = video_devdata(file);
314527ac 1371 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
4b1e2e4d 1372
314527ac 1373 norm = id & vfd->tvnorms;
4b1e2e4d
HV		 1374 if (vfd->tvnorms && !norm) /* Check if std is supported */
1375 return -EINVAL;
1376
1377 /* Calls the specific handler */
ca371575 1378 return ops->vidioc_s_std(file, fh, norm);
4b1e2e4d
HV		 1379}
1380
1381static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1382 struct file *file, void *fh, void *arg)
1383{
1384 struct video_device *vfd = video_devdata(file);
1385 v4l2_std_id *p = arg;
1386
1387 /*
1388 * If nothing detected, it should return all supported
1389 * standard.
1390 * Drivers just need to mask the std argument, in order
1391 * to remove the standards that don't apply from the mask.
1392 * This means that tuners, audio and video decoders can join
1393 * their efforts to improve the standards detection.
1394 */
1395 *p = vfd->tvnorms;
1396 return ops->vidioc_querystd(file, fh, arg);
1397}
1398
1399static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1400 struct file *file, void *fh, void *arg)
1401{
1402 struct video_device *vfd = video_devdata(file);
1403 struct v4l2_hw_freq_seek *p = arg;
1404 enum v4l2_tuner_type type;
1405
1406 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1407 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1408 if (p->type != type)
1409 return -EINVAL;
1410 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1411}
1412
737c097b
HV		 1413static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1414 struct file *file, void *fh, void *arg)
1415{
1416 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1417}
1418
eb3728ed
HV		 1419static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1420 struct file *file, void *fh, void *arg)
1421{
1422 struct v4l2_requestbuffers *p = arg;
4b20259f 1423 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1424
1425 if (ret)
1426 return ret;
1427
633c98e5 1428 CLEAR_AFTER_FIELD(p, memory);
eb3728ed
HV		 1429
1430 return ops->vidioc_reqbufs(file, fh, p);
1431}
1432
1433static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1434 struct file *file, void *fh, void *arg)
1435{
1436 struct v4l2_buffer *p = arg;
4b20259f 1437 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1438
1439 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1440}
1441
1442static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1443 struct file *file, void *fh, void *arg)
1444{
1445 struct v4l2_buffer *p = arg;
4b20259f 1446 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1447
1448 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
1449}
1450
1451static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
1452 struct file *file, void *fh, void *arg)
1453{
1454 struct v4l2_buffer *p = arg;
4b20259f 1455 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1456
1457 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
1458}
1459
1460static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
1461 struct file *file, void *fh, void *arg)
1462{
1463 struct v4l2_create_buffers *create = arg;
4b20259f 1464 int ret = check_fmt(file, create->format.type);
eb3728ed
HV		 1465
1466 return ret ? ret : ops->vidioc_create_bufs(file, fh, create);
1467}
1468
1469static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
1470 struct file *file, void *fh, void *arg)
1471{
1472 struct v4l2_buffer *b = arg;
4b20259f 1473 int ret = check_fmt(file, b->type);
eb3728ed
HV		 1474
1475 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
1476}
1477
1478static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
1479 struct file *file, void *fh, void *arg)
1480{
eb3728ed
HV		 1481 struct v4l2_streamparm *p = arg;
1482 v4l2_std_id std;
4b20259f 1483 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1484
1485 if (ret)
1486 return ret;
1487 if (ops->vidioc_g_parm)
1488 return ops->vidioc_g_parm(file, fh, p);
eb3728ed
HV		 1489 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1490 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1491 return -EINVAL;
1492 p->parm.capture.readbuffers = 2;
ca371575 1493 ret = ops->vidioc_g_std(file, fh, &std);
eb3728ed 1494 if (ret == 0)
ca371575 1495 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
eb3728ed
HV		 1496 return ret;
1497}
1498
1499static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
1500 struct file *file, void *fh, void *arg)
1501{
1502 struct v4l2_streamparm *p = arg;
4b20259f 1503 int ret = check_fmt(file, p->type);
eb3728ed
HV		 1504
1505 return ret ? ret : ops->vidioc_s_parm(file, fh, p);
1506}
1507
efbceecd
HV		 1508static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
1509 struct file *file, void *fh, void *arg)
1510{
1511 struct video_device *vfd = video_devdata(file);
1512 struct v4l2_queryctrl *p = arg;
7a3ed2d9
HV		 1513 struct v4l2_fh *vfh =
1514 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1515
1516 if (vfh && vfh->ctrl_handler)
1517 return v4l2_queryctrl(vfh->ctrl_handler, p);
1518 if (vfd->ctrl_handler)
1519 return v4l2_queryctrl(vfd->ctrl_handler, p);
1520 if (ops->vidioc_queryctrl)
1521 return ops->vidioc_queryctrl(file, fh, p);
1522 return -ENOTTY;
1523}
1524
1525static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
1526 struct file *file, void *fh, void *arg)
1527{
1528 struct video_device *vfd = video_devdata(file);
1529 struct v4l2_querymenu *p = arg;
7a3ed2d9
HV		 1530 struct v4l2_fh *vfh =
1531 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1532
1533 if (vfh && vfh->ctrl_handler)
1534 return v4l2_querymenu(vfh->ctrl_handler, p);
1535 if (vfd->ctrl_handler)
1536 return v4l2_querymenu(vfd->ctrl_handler, p);
1537 if (ops->vidioc_querymenu)
1538 return ops->vidioc_querymenu(file, fh, p);
1539 return -ENOTTY;
1540}
1541
1542static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
1543 struct file *file, void *fh, void *arg)
1544{
1545 struct video_device *vfd = video_devdata(file);
1546 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1547 struct v4l2_fh *vfh =
1548 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1549 struct v4l2_ext_controls ctrls;
1550 struct v4l2_ext_control ctrl;
1551
1552 if (vfh && vfh->ctrl_handler)
1553 return v4l2_g_ctrl(vfh->ctrl_handler, p);
1554 if (vfd->ctrl_handler)
1555 return v4l2_g_ctrl(vfd->ctrl_handler, p);
1556 if (ops->vidioc_g_ctrl)
1557 return ops->vidioc_g_ctrl(file, fh, p);
1558 if (ops->vidioc_g_ext_ctrls == NULL)
1559 return -ENOTTY;
1560
1561 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1562 ctrls.count = 1;
1563 ctrls.controls = &ctrl;
1564 ctrl.id = p->id;
1565 ctrl.value = p->value;
1566 if (check_ext_ctrls(&ctrls, 1)) {
1567 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
1568
1569 if (ret == 0)
1570 p->value = ctrl.value;
1571 return ret;
1572 }
1573 return -EINVAL;
1574}
1575
1576static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
1577 struct file *file, void *fh, void *arg)
1578{
1579 struct video_device *vfd = video_devdata(file);
1580 struct v4l2_control *p = arg;
7a3ed2d9
HV		 1581 struct v4l2_fh *vfh =
1582 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1583 struct v4l2_ext_controls ctrls;
1584 struct v4l2_ext_control ctrl;
1585
1586 if (vfh && vfh->ctrl_handler)
1587 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
1588 if (vfd->ctrl_handler)
1589 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
1590 if (ops->vidioc_s_ctrl)
1591 return ops->vidioc_s_ctrl(file, fh, p);
1592 if (ops->vidioc_s_ext_ctrls == NULL)
1593 return -ENOTTY;
1594
1595 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1596 ctrls.count = 1;
1597 ctrls.controls = &ctrl;
1598 ctrl.id = p->id;
1599 ctrl.value = p->value;
1600 if (check_ext_ctrls(&ctrls, 1))
1601 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
1602 return -EINVAL;
1603}
1604
1605static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1606 struct file *file, void *fh, void *arg)
1607{
1608 struct video_device *vfd = video_devdata(file);
1609 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1610 struct v4l2_fh *vfh =
1611 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1612
1613 p->error_idx = p->count;
1614 if (vfh && vfh->ctrl_handler)
1615 return v4l2_g_ext_ctrls(vfh->ctrl_handler, p);
1616 if (vfd->ctrl_handler)
1617 return v4l2_g_ext_ctrls(vfd->ctrl_handler, p);
1618 if (ops->vidioc_g_ext_ctrls == NULL)
1619 return -ENOTTY;
1620 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
1621 -EINVAL;
1622}
1623
1624static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1625 struct file *file, void *fh, void *arg)
1626{
1627 struct video_device *vfd = video_devdata(file);
1628 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1629 struct v4l2_fh *vfh =
1630 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1631
1632 p->error_idx = p->count;
1633 if (vfh && vfh->ctrl_handler)
1634 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, p);
1635 if (vfd->ctrl_handler)
1636 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler, p);
1637 if (ops->vidioc_s_ext_ctrls == NULL)
1638 return -ENOTTY;
1639 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
1640 -EINVAL;
1641}
1642
1643static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
1644 struct file *file, void *fh, void *arg)
1645{
1646 struct video_device *vfd = video_devdata(file);
1647 struct v4l2_ext_controls *p = arg;
7a3ed2d9
HV		 1648 struct v4l2_fh *vfh =
1649 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
efbceecd
HV		 1650
1651 p->error_idx = p->count;
1652 if (vfh && vfh->ctrl_handler)
1653 return v4l2_try_ext_ctrls(vfh->ctrl_handler, p);
1654 if (vfd->ctrl_handler)
1655 return v4l2_try_ext_ctrls(vfd->ctrl_handler, p);
1656 if (ops->vidioc_try_ext_ctrls == NULL)
1657 return -ENOTTY;
1658 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
1659 -EINVAL;
1660}
1661
d84f2d94
HV		 1662static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
1663 struct file *file, void *fh, void *arg)
1664{
1665 struct v4l2_crop *p = arg;
1666 struct v4l2_selection s = {
1667 .type = p->type,
1668 };
1669 int ret;
1670
1671 if (ops->vidioc_g_crop)
1672 return ops->vidioc_g_crop(file, fh, p);
1673 /* simulate capture crop using selection api */
1674
1675 /* crop means compose for output devices */
1676 if (V4L2_TYPE_IS_OUTPUT(p->type))
1677 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1678 else
1679 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1680
1681 ret = ops->vidioc_g_selection(file, fh, &s);
1682
1683 /* copying results to old structure on success */
1684 if (!ret)
1685 p->c = s.r;
1686 return ret;
1687}
1688
1689static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
1690 struct file *file, void *fh, void *arg)
1691{
1692 struct v4l2_crop *p = arg;
1693 struct v4l2_selection s = {
1694 .type = p->type,
1695 .r = p->c,
1696 };
1697
1698 if (ops->vidioc_s_crop)
1699 return ops->vidioc_s_crop(file, fh, p);
1700 /* simulate capture crop using selection api */
1701
1702 /* crop means compose for output devices */
1703 if (V4L2_TYPE_IS_OUTPUT(p->type))
1704 s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
1705 else
1706 s.target = V4L2_SEL_TGT_CROP_ACTIVE;
1707
1708 return ops->vidioc_s_selection(file, fh, &s);
1709}
1710
1711static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
1712 struct file *file, void *fh, void *arg)
1713{
1714 struct v4l2_cropcap *p = arg;
1715 struct v4l2_selection s = { .type = p->type };
1716 int ret;
1717
1718 if (ops->vidioc_cropcap)
1719 return ops->vidioc_cropcap(file, fh, p);
1720
1721 /* obtaining bounds */
1722 if (V4L2_TYPE_IS_OUTPUT(p->type))
1723 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
1724 else
1725 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
1726
1727 ret = ops->vidioc_g_selection(file, fh, &s);
1728 if (ret)
1729 return ret;
1730 p->bounds = s.r;
1731
1732 /* obtaining defrect */
1733 if (V4L2_TYPE_IS_OUTPUT(p->type))
1734 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
1735 else
1736 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
1737
1738 ret = ops->vidioc_g_selection(file, fh, &s);
1739 if (ret)
1740 return ret;
1741 p->defrect = s.r;
1742
1743 /* setting trivial pixelaspect */
1744 p->pixelaspect.numerator = 1;
1745 p->pixelaspect.denominator = 1;
1746 return 0;
1747}
1748
f16f77b0
HV		 1749static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
1750 struct file *file, void *fh, void *arg)
1751{
1752 struct video_device *vfd = video_devdata(file);
1753 int ret;
1754
1755 if (vfd->v4l2_dev)
1756 pr_info("%s: ================= START STATUS =================\n",
1757 vfd->v4l2_dev->name);
1758 ret = ops->vidioc_log_status(file, fh);
1759 if (vfd->v4l2_dev)
1760 pr_info("%s: ================== END STATUS ==================\n",
1761 vfd->v4l2_dev->name);
1762 return ret;
1763}
1764
1765static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
1766 struct file *file, void *fh, void *arg)
1767{
1768#ifdef CONFIG_VIDEO_ADV_DEBUG
1769 struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1770 struct video_device *vfd = video_devdata(file);
1771 struct v4l2_subdev *sd;
1772 int idx = 0;
f16f77b0
HV		 1773
1774 if (!capable(CAP_SYS_ADMIN))
1775 return -EPERM;
3eef2510 1776 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1777 if (vfd->v4l2_dev == NULL)
1778 return -EINVAL;
3eef2510
HV		 1779 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1780 if (p->match.addr == idx++)
79b0c640 1781 return v4l2_subdev_call(sd, core, g_register, p);
79b0c640
HV		 1782 return -EINVAL;
1783 }
191b79b0
HV		 1784 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1785 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1786 return ops->vidioc_g_register(file, fh, p);
1787 return -EINVAL;
f16f77b0
HV		 1788#else
1789 return -ENOTTY;
1790#endif
1791}
1792
1793static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
1794 struct file *file, void *fh, void *arg)
1795{
1796#ifdef CONFIG_VIDEO_ADV_DEBUG
977ba3b1 1797 const struct v4l2_dbg_register *p = arg;
79b0c640
HV		 1798 struct video_device *vfd = video_devdata(file);
1799 struct v4l2_subdev *sd;
1800 int idx = 0;
f16f77b0
HV		 1801
1802 if (!capable(CAP_SYS_ADMIN))
1803 return -EPERM;
3eef2510 1804 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
79b0c640
HV		 1805 if (vfd->v4l2_dev == NULL)
1806 return -EINVAL;
3eef2510
HV		 1807 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
1808 if (p->match.addr == idx++)
79b0c640 1809 return v4l2_subdev_call(sd, core, s_register, p);
79b0c640
HV		 1810 return -EINVAL;
1811 }
191b79b0
HV		 1812 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
1813 (ops->vidioc_g_chip_info || p->match.addr == 0))
79b0c640
HV		 1814 return ops->vidioc_s_register(file, fh, p);
1815 return -EINVAL;
f16f77b0
HV		 1816#else
1817 return -ENOTTY;
1818#endif
1819}
1820
1821static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
1822 struct file *file, void *fh, void *arg)
1823{
1824 struct v4l2_dbg_chip_ident *p = arg;
1825
1826 p->ident = V4L2_IDENT_NONE;
1827 p->revision = 0;
3eef2510 1828 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV)
79b0c640 1829 return -EINVAL;
f16f77b0
HV		 1830 return ops->vidioc_g_chip_ident(file, fh, p);
1831}
1832
96b03d2a 1833static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
79b0c640
HV		 1834 struct file *file, void *fh, void *arg)
1835{
cd634f1b 1836#ifdef CONFIG_VIDEO_ADV_DEBUG
79b0c640 1837 struct video_device *vfd = video_devdata(file);
96b03d2a 1838 struct v4l2_dbg_chip_info *p = arg;
79b0c640
HV		 1839 struct v4l2_subdev *sd;
1840 int idx = 0;
1841
1842 switch (p->match.type) {
1843 case V4L2_CHIP_MATCH_BRIDGE:
79b0c640
HV		 1844 if (ops->vidioc_s_register)
1845 p->flags |= V4L2_CHIP_FL_WRITABLE;
1846 if (ops->vidioc_g_register)
1847 p->flags |= V4L2_CHIP_FL_READABLE;
79b0c640
HV		 1848 if (vfd->v4l2_dev)
1849 strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
1850 else if (vfd->parent)
1851 strlcpy(p->name, vfd->parent->driver->name, sizeof(p->name));
1852 else
1853 strlcpy(p->name, "bridge", sizeof(p->name));
96b03d2a
HV		 1854 if (ops->vidioc_g_chip_info)
1855 return ops->vidioc_g_chip_info(file, fh, arg);
0f0fe4b9
HV		 1856 if (p->match.addr)
1857 return -EINVAL;
79b0c640
HV		 1858 return 0;
1859
3eef2510 1860 case V4L2_CHIP_MATCH_SUBDEV:
79b0c640
HV		 1861 if (vfd->v4l2_dev == NULL)
1862 break;
1863 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
3eef2510
HV		 1864 if (p->match.addr != idx++)
1865 continue;
1866 if (sd->ops->core && sd->ops->core->s_register)
1867 p->flags |= V4L2_CHIP_FL_WRITABLE;
1868 if (sd->ops->core && sd->ops->core->g_register)
1869 p->flags |= V4L2_CHIP_FL_READABLE;
1870 strlcpy(p->name, sd->name, sizeof(p->name));
1871 return 0;
79b0c640
HV		 1872 }
1873 break;
1874 }
1875 return -EINVAL;
cd634f1b
HV		 1876#else
1877 return -ENOTTY;
1878#endif
79b0c640
HV		 1879}
1880
458aa4a6
HV		 1881static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
1882 struct file *file, void *fh, void *arg)
1883{
1884 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
1885}
1886
1887static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
1888 struct file *file, void *fh, void *arg)
1889{
1890 return ops->vidioc_subscribe_event(fh, arg);
1891}
1892
1893static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
1894 struct file *file, void *fh, void *arg)
1895{
1896 return ops->vidioc_unsubscribe_event(fh, arg);
1897}
1898
1899static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
1900 struct file *file, void *fh, void *arg)
1901{
1902 struct v4l2_sliced_vbi_cap *p = arg;
4b20259f
HV		 1903 int ret = check_fmt(file, p->type);
1904
1905 if (ret)
1906 return ret;
458aa4a6
HV		 1907
1908 /* Clear up to type, everything after type is zeroed already */
1909 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1910
1911 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
1912}
1913
82b655bf
HV		 1914static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
1915 struct file *file, void *fh, void *arg)
1916{
1917 struct video_device *vfd = video_devdata(file);
1918 struct v4l2_frequency_band *p = arg;
1919 enum v4l2_tuner_type type;
1920 int err;
1921
1922 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1923 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1924
1925 if (type != p->type)
1926 return -EINVAL;
1927 if (ops->vidioc_enum_freq_bands)
1928 return ops->vidioc_enum_freq_bands(file, fh, p);
73f35418 1929 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
82b655bf
HV		 1930 struct v4l2_tuner t = {
1931 .index = p->tuner,
1932 .type = type,
1933 };
1934
aa4d9b53
HV		 1935 if (p->index)
1936 return -EINVAL;
82b655bf
HV		 1937 err = ops->vidioc_g_tuner(file, fh, &t);
1938 if (err)
1939 return err;
1940 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1941 p->rangelow = t.rangelow;
1942 p->rangehigh = t.rangehigh;
1943 p->modulation = (type == V4L2_TUNER_RADIO) ?
1944 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1945 return 0;
1946 }
73f35418 1947 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
82b655bf
HV		 1948 struct v4l2_modulator m = {
1949 .index = p->tuner,
1950 };
1951
1952 if (type != V4L2_TUNER_RADIO)
1953 return -EINVAL;
aa4d9b53
HV		 1954 if (p->index)
1955 return -EINVAL;
82b655bf
HV		 1956 err = ops->vidioc_g_modulator(file, fh, &m);
1957 if (err)
1958 return err;
1959 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
1960 p->rangelow = m.rangelow;
1961 p->rangehigh = m.rangehigh;
1962 p->modulation = (type == V4L2_TUNER_RADIO) ?
1963 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
1964 return 0;
1965 }
1966 return -ENOTTY;
1967}
1968
4839e6c2
HV		 1969struct v4l2_ioctl_info {
1970 unsigned int ioctl;
27cd2aba 1971 u32 flags;
4839e6c2 1972 const char * const name;
86748f35
HV		 1973 union {
1974 u32 offset;
1975 int (*func)(const struct v4l2_ioctl_ops *ops,
1976 struct file *file, void *fh, void *p);
26ddcbcc 1977 } u;
86748f35 1978 void (*debug)(const void *arg, bool write_only);
4839e6c2
HV		 1979};
1980
1981/* This control needs a priority check */
1982#define INFO_FL_PRIO (1 << 0)
1983/* This control can be valid if the filehandle passes a control handler. */
1984#define INFO_FL_CTRL (1 << 1)
86748f35
HV		 1985/* This is a standard ioctl, no need for special code */
1986#define INFO_FL_STD (1 << 2)
1987/* This is ioctl has its own function */
1988#define INFO_FL_FUNC (1 << 3)
5a5adf6b
HV		 1989/* Queuing ioctl */
1990#define INFO_FL_QUEUE (1 << 4)
27cd2aba
HV		 1991/* Zero struct from after the field to the end */
1992#define INFO_FL_CLEAR(v4l2_struct, field) \
1993 ((offsetof(struct v4l2_struct, field) + \
1994 sizeof(((struct v4l2_struct *)0)->field)) << 16)
1995#define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
4839e6c2 1996
86748f35
HV		 1997#define IOCTL_INFO_STD(_ioctl, _vidioc, _debug, _flags) \
1998 [_IOC_NR(_ioctl)] = { \
1999 .ioctl = _ioctl, \
2000 .flags = _flags | INFO_FL_STD, \
2001 .name = #_ioctl, \
26ddcbcc 2002 .u.offset = offsetof(struct v4l2_ioctl_ops, _vidioc), \
86748f35
HV		 2003 .debug = _debug, \
2004 }
2005
2006#define IOCTL_INFO_FNC(_ioctl, _func, _debug, _flags) \
2007 [_IOC_NR(_ioctl)] = { \
2008 .ioctl = _ioctl, \
2009 .flags = _flags | INFO_FL_FUNC, \
2010 .name = #_ioctl, \
26ddcbcc 2011 .u.func = _func, \
86748f35
HV		 2012 .debug = _debug, \
2013 }
2014
4839e6c2 2015static struct v4l2_ioctl_info v4l2_ioctls[] = {
59076122 2016 IOCTL_INFO_FNC(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
be6c64e4
HV		 2017 IOCTL_INFO_FNC(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2018 IOCTL_INFO_FNC(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, INFO_FL_CLEAR(v4l2_format, type)),
2019 IOCTL_INFO_FNC(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
5a5adf6b
HV		 2020 IOCTL_INFO_FNC(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2021 IOCTL_INFO_FNC(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
be6c64e4
HV		 2022 IOCTL_INFO_STD(VIDIOC_G_FBUF, vidioc_g_fbuf, v4l_print_framebuffer, 0),
2023 IOCTL_INFO_STD(VIDIOC_S_FBUF, vidioc_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
737c097b 2024 IOCTL_INFO_FNC(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
5a5adf6b 2025 IOCTL_INFO_FNC(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
b799d09a 2026 IOCTL_INFO_STD(VIDIOC_EXPBUF, vidioc_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
5a5adf6b
HV		 2027 IOCTL_INFO_FNC(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2028 IOCTL_INFO_FNC(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2029 IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
eb3728ed
HV		 2030 IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2031 IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
ca371575 2032 IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
4b1e2e4d
HV		 2033 IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2034 IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
59076122 2035 IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
efbceecd
HV		 2036 IOCTL_INFO_FNC(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2037 IOCTL_INFO_FNC(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
4b1e2e4d
HV		 2038 IOCTL_INFO_FNC(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2039 IOCTL_INFO_FNC(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
59076122
HV		 2040 IOCTL_INFO_STD(VIDIOC_G_AUDIO, vidioc_g_audio, v4l_print_audio, 0),
2041 IOCTL_INFO_STD(VIDIOC_S_AUDIO, vidioc_s_audio, v4l_print_audio, INFO_FL_PRIO),
efbceecd
HV		 2042 IOCTL_INFO_FNC(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2043 IOCTL_INFO_FNC(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
59076122
HV		 2044 IOCTL_INFO_STD(VIDIOC_G_INPUT, vidioc_g_input, v4l_print_u32, 0),
2045 IOCTL_INFO_FNC(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2046 IOCTL_INFO_STD(VIDIOC_G_OUTPUT, vidioc_g_output, v4l_print_u32, 0),
2047 IOCTL_INFO_FNC(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2048 IOCTL_INFO_FNC(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2049 IOCTL_INFO_STD(VIDIOC_G_AUDOUT, vidioc_g_audout, v4l_print_audioout, 0),
2050 IOCTL_INFO_STD(VIDIOC_S_AUDOUT, vidioc_s_audout, v4l_print_audioout, INFO_FL_PRIO),
82b655bf 2051 IOCTL_INFO_FNC(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
4b1e2e4d
HV		 2052 IOCTL_INFO_STD(VIDIOC_S_MODULATOR, vidioc_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2053 IOCTL_INFO_FNC(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2054 IOCTL_INFO_FNC(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
d84f2d94
HV		 2055 IOCTL_INFO_FNC(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2056 IOCTL_INFO_FNC(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2057 IOCTL_INFO_FNC(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2058 IOCTL_INFO_STD(VIDIOC_G_SELECTION, vidioc_g_selection, v4l_print_selection, 0),
2059 IOCTL_INFO_STD(VIDIOC_S_SELECTION, vidioc_s_selection, v4l_print_selection, INFO_FL_PRIO),
d806f2df
HV		 2060 IOCTL_INFO_STD(VIDIOC_G_JPEGCOMP, vidioc_g_jpegcomp, v4l_print_jpegcompression, 0),
2061 IOCTL_INFO_STD(VIDIOC_S_JPEGCOMP, vidioc_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
4b1e2e4d 2062 IOCTL_INFO_FNC(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
be6c64e4 2063 IOCTL_INFO_FNC(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
59076122
HV		 2064 IOCTL_INFO_STD(VIDIOC_ENUMAUDIO, vidioc_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2065 IOCTL_INFO_STD(VIDIOC_ENUMAUDOUT, vidioc_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
d0547cba
HV		 2066 IOCTL_INFO_FNC(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2067 IOCTL_INFO_FNC(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
458aa4a6 2068 IOCTL_INFO_FNC(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
f16f77b0 2069 IOCTL_INFO_FNC(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
efbceecd
HV		 2070 IOCTL_INFO_FNC(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2071 IOCTL_INFO_FNC(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
9bc31633 2072 IOCTL_INFO_FNC(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
458aa4a6
HV		 2073 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2074 IOCTL_INFO_STD(VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
d806f2df
HV		 2075 IOCTL_INFO_STD(VIDIOC_G_ENC_INDEX, vidioc_g_enc_index, v4l_print_enc_idx, 0),
2076 IOCTL_INFO_STD(VIDIOC_ENCODER_CMD, vidioc_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2077 IOCTL_INFO_STD(VIDIOC_TRY_ENCODER_CMD, vidioc_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2078 IOCTL_INFO_STD(VIDIOC_DECODER_CMD, vidioc_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2079 IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
f16f77b0
HV		 2080 IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2081 IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2082 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 0),
4b1e2e4d 2083 IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
efc626b0
HV		 2084 IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
2085 IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
458aa4a6
HV		 2086 IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2087 IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2088 IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
5a5adf6b
HV		 2089 IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2090 IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
efc626b0
HV		 2091 IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
2092 IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
a1acb8f9 2093 IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
82b655bf 2094 IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
96b03d2a 2095 IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
4839e6c2
HV		 2096};
2097#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2098
2099bool v4l2_is_known_ioctl(unsigned int cmd)
2100{
2101 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2102 return false;
2103 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2104}
2105
5a5adf6b
HV		 2106struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd)
2107{
2108 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2109 return vdev->lock;
2110 if (test_bit(_IOC_NR(cmd), vdev->disable_locking))
2111 return NULL;
2112 if (vdev->queue && vdev->queue->lock &&
2113 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2114 return vdev->queue->lock;
2115 return vdev->lock;
2116}
2117
4839e6c2
HV		 2118/* Common ioctl debug function. This function can be used by
2119 external ioctl messages as well as internal V4L ioctl */
4a085168 2120void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
4839e6c2 2121{
86748f35 2122 const char *dir, *type;
4839e6c2 2123
4a085168
HV		 2124 if (prefix)
2125 printk(KERN_DEBUG "%s: ", prefix);
2126
4839e6c2
HV		 2127 switch (_IOC_TYPE(cmd)) {
2128 case 'd':
2129 type = "v4l2_int";
2130 break;
2131 case 'V':
2132 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2133 type = "v4l2";
2134 break;
2135 }
86748f35 2136 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
4839e6c2
HV		 2137 return;
2138 default:
2139 type = "unknown";
86748f35 2140 break;
4839e6c2
HV		 2141 }
2142
2143 switch (_IOC_DIR(cmd)) {
2144 case _IOC_NONE: dir = "--"; break;
2145 case _IOC_READ: dir = "r-"; break;
2146 case _IOC_WRITE: dir = "-w"; break;
2147 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2148 default: dir = "*ERR*"; break;
2149 }
86748f35 2150 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
4839e6c2
HV		 2151 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2152}
2153EXPORT_SYMBOL(v4l_printk_ioctl);
2154
069b7479 2155static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 2156 unsigned int cmd, void *arg)
2157{
2158 struct video_device *vfd = video_devdata(file);
a399810c 2159 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
86748f35
HV		 2160 bool write_only = false;
2161 struct v4l2_ioctl_info default_info;
2162 const struct v4l2_ioctl_info *info;
d5fbf32f 2163 void *fh = file->private_data;
99cd47bc 2164 struct v4l2_fh *vfh = NULL;
b1a873a3 2165 int use_fh_prio = 0;
80131fe0 2166 int debug = vfd->debug;
9190d191 2167 long ret = -ENOTTY;
35ea11ff 2168
6a717883 2169 if (ops == NULL) {
4a085168
HV		 2170 pr_warn("%s: has no ioctl_ops.\n",
2171 video_device_node_name(vfd));
9190d191 2172 return ret;
6a717883
HV		 2173 }
2174
b1a873a3 2175 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) {
99cd47bc 2176 vfh = file->private_data;
b1a873a3
HV		 2177 use_fh_prio = test_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
2178 }
99cd47bc 2179
48ea0be0 2180 if (v4l2_is_known_ioctl(cmd)) {
86748f35 2181 info = &v4l2_ioctls[_IOC_NR(cmd)];
48ea0be0
HV		 2182
2183 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2184 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
86748f35 2185 goto done;
4b902fec
HV		 2186
2187 if (use_fh_prio && (info->flags & INFO_FL_PRIO)) {
2188 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2189 if (ret)
86748f35 2190 goto done;
4b902fec 2191 }
86748f35
HV		 2192 } else {
2193 default_info.ioctl = cmd;
2194 default_info.flags = 0;
f18d8e07 2195 default_info.debug = v4l_print_default;
86748f35 2196 info = &default_info;
48ea0be0
HV		 2197 }
2198
86748f35 2199 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
86748f35
HV		 2200 if (info->flags & INFO_FL_STD) {
2201 typedef int (*vidioc_op)(struct file *file, void *fh, void *p);
2202 const void *p = vfd->ioctl_ops;
26ddcbcc 2203 const vidioc_op *vidioc = p + info->u.offset;
86748f35
HV		 2204
2205 ret = (*vidioc)(file, fh, arg);
86748f35 2206 } else if (info->flags & INFO_FL_FUNC) {
26ddcbcc 2207 ret = info->u.func(ops, file, fh, arg);
f18d8e07
HV		 2208 } else if (!ops->vidioc_default) {
2209 ret = -ENOTTY;
2210 } else {
2211 ret = ops->vidioc_default(file, fh,
2212 use_fh_prio ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2213 cmd, arg);
48ea0be0 2214 }
99cd47bc 2215
86748f35 2216done:
80131fe0 2217 if (debug) {
4a085168 2218 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
86748f35 2219 if (ret < 0)
505d04bd
HV		 2220 pr_cont(": error %ld", ret);
2221 if (debug == V4L2_DEBUG_IOCTL)
86748f35 2222 pr_cont("\n");
86748f35
HV		 2223 else if (_IOC_DIR(cmd) == _IOC_NONE)
2224 info->debug(arg, write_only);
2225 else {
2226 pr_cont(": ");
2227 info->debug(arg, write_only);
35ea11ff
HV		 2228 }
2229 }
2230
2231 return ret;
2232}
2233
d14e6d76
PO		 2234static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2235 void * __user *user_ptr, void ***kernel_ptr)
2236{
2237 int ret = 0;
2238
2239 switch (cmd) {
96b1a702 2240 case VIDIOC_PREPARE_BUF:
d14e6d76
PO		 2241 case VIDIOC_QUERYBUF:
2242 case VIDIOC_QBUF:
2243 case VIDIOC_DQBUF: {
2244 struct v4l2_buffer *buf = parg;
2245
2246 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2247 if (buf->length > VIDEO_MAX_PLANES) {
2248 ret = -EINVAL;
2249 break;
2250 }
2251 *user_ptr = (void __user *)buf->m.planes;
2ef40370 2252 *kernel_ptr = (void *)&buf->m.planes;
d14e6d76
PO		 2253 *array_size = sizeof(struct v4l2_plane) * buf->length;
2254 ret = 1;
2255 }
2256 break;
2257 }
2258
ed45ce2c
HV		 2259 case VIDIOC_SUBDEV_G_EDID:
2260 case VIDIOC_SUBDEV_S_EDID: {
2261 struct v4l2_subdev_edid *edid = parg;
2262
2263 if (edid->blocks) {
1b8b10cc
HV		 2264 if (edid->blocks > 256) {
2265 ret = -EINVAL;
2266 break;
2267 }
ed45ce2c
HV		 2268 *user_ptr = (void __user *)edid->edid;
2269 *kernel_ptr = (void *)&edid->edid;
2270 *array_size = edid->blocks * 128;
2271 ret = 1;
2272 }
2273 break;
2274 }
2275
d14e6d76
PO		 2276 case VIDIOC_S_EXT_CTRLS:
2277 case VIDIOC_G_EXT_CTRLS:
2278 case VIDIOC_TRY_EXT_CTRLS: {
2279 struct v4l2_ext_controls *ctrls = parg;
2280
2281 if (ctrls->count != 0) {
6c06108b
DC		 2282 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
2283 ret = -EINVAL;
2284 break;
2285 }
d14e6d76 2286 *user_ptr = (void __user *)ctrls->controls;
2ef40370 2287 *kernel_ptr = (void *)&ctrls->controls;
d14e6d76
PO		 2288 *array_size = sizeof(struct v4l2_ext_control)
2289 * ctrls->count;
2290 ret = 1;
2291 }
2292 break;
2293 }
2294 }
2295
2296 return ret;
2297}
2298
fc0a8079
LP		 2299long
2300video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
2301 v4l2_kioctl func)
35ea11ff
HV		 2302{
2303 char sbuf[128];
2304 void *mbuf = NULL;
1d94aa36 2305 void *parg = (void *)arg;
069b7479 2306 long err = -EINVAL;
d14e6d76
PO		 2307 bool has_array_args;
2308 size_t array_size = 0;
35ea11ff 2309 void __user *user_ptr = NULL;
d14e6d76 2310 void **kernel_ptr = NULL;
35ea11ff 2311
35ea11ff 2312 /* Copy arguments into temp kernel buffer */
337f9d20 2313 if (_IOC_DIR(cmd) != _IOC_NONE) {
35ea11ff
HV		 2314 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
2315 parg = sbuf;
2316 } else {
2317 /* too big to allocate from stack */
2318 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
2319 if (NULL == mbuf)
2320 return -ENOMEM;
2321 parg = mbuf;
2322 }
2323
2324 err = -EFAULT;
19c96e4b 2325 if (_IOC_DIR(cmd) & _IOC_WRITE) {
27cd2aba
HV		 2326 unsigned int n = _IOC_SIZE(cmd);
2327
2328 /*
2329 * In some cases, only a few fields are used as input,
2330 * i.e. when the app sets "index" and then the driver
2331 * fills in the rest of the structure for the thing
2332 * with that index. We only need to copy up the first
2333 * non-input field.
2334 */
2335 if (v4l2_is_known_ioctl(cmd)) {
2336 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
2337 if (flags & INFO_FL_CLEAR_MASK)
2338 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
2339 }
19c96e4b
TP		 2340
2341 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 2342 goto out;
19c96e4b
TP		 2343
2344 /* zero out anything we don't copy from userspace */
2345 if (n < _IOC_SIZE(cmd))
2346 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
337f9d20
TP		 2347 } else {
2348 /* read-only ioctl */
2349 memset(parg, 0, _IOC_SIZE(cmd));
19c96e4b 2350 }
35ea11ff
HV		 2351 }
2352
d14e6d76
PO		 2353 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
2354 if (err < 0)
2355 goto out;
2356 has_array_args = err;
35ea11ff 2357
d14e6d76
PO		 2358 if (has_array_args) {
2359 /*
2360 * When adding new types of array args, make sure that the
2361 * parent argument to ioctl (which contains the pointer to the
2362 * array) fits into sbuf (so that mbuf will still remain
2363 * unused up to here).
2364 */
2365 mbuf = kmalloc(array_size, GFP_KERNEL);
2366 err = -ENOMEM;
2367 if (NULL == mbuf)
2368 goto out_array_args;
2369 err = -EFAULT;
2370 if (copy_from_user(mbuf, user_ptr, array_size))
2371 goto out_array_args;
2372 *kernel_ptr = mbuf;
35ea11ff
HV		 2373 }
2374
2375 /* Handles IOCTL */
fc0a8079 2376 err = func(file, cmd, parg);
35ea11ff 2377 if (err == -ENOIOCTLCMD)
02bbb814 2378 err = -ENOTTY;
35ea11ff 2379
d14e6d76
PO		 2380 if (has_array_args) {
2381 *kernel_ptr = user_ptr;
2382 if (copy_to_user(user_ptr, mbuf, array_size))
35ea11ff 2383 err = -EFAULT;
d14e6d76 2384 goto out_array_args;
35ea11ff 2385 }
5d7758ee
HV		 2386 /* VIDIOC_QUERY_DV_TIMINGS can return an error, but still have valid
2387 results that must be returned. */
2388 if (err < 0 && cmd != VIDIOC_QUERY_DV_TIMINGS)
35ea11ff
HV		 2389 goto out;
2390
d14e6d76 2391out_array_args:
35ea11ff
HV		 2392 /* Copy results into user buffer */
2393 switch (_IOC_DIR(cmd)) {
2394 case _IOC_READ:
2395 case (_IOC_WRITE | _IOC_READ):
2396 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
2397 err = -EFAULT;
2398 break;
2399 }
2400
2401out:
2402 kfree(mbuf);
2403 return err;
2404}
fc0a8079
LP		 2405EXPORT_SYMBOL(video_usercopy);
2406
2407long video_ioctl2(struct file *file,
2408 unsigned int cmd, unsigned long arg)
2409{
2410 return video_usercopy(file, cmd, arg, __video_do_ioctl);
2411}
8a522c91 2412EXPORT_SYMBOL(video_ioctl2);
Linux kernel - Deliverables
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